When I think of a high performance Skyline R30 I alway picture either the louvre grille DR30 or the tekkamen (Iron Mask) DR30, but not this thoroughbred 2000GT Turbo:
Thoroughbred Skyline 2000GT Turbo
Thoroughbred Skyline 2000GT Turbo

Thoroughbred in Skyline terms means it is at least having a L20 engine under its hood:
Thoroughbred Skyline 2000GT Turbo
Thoroughbred Skyline 2000GT Turbo
And normally a thoroughbred L20ET should have a bit more oomph than its predecessor but in this case Nissan kept the entire L20ET the same as in the C211. Perhaps they thought it meant that the shell was thoroughbred and its engine were the strong genes remaining from its predecessor?